结构如何使用一个空数组，后来将如何放置地址？
据我所知，新地址[]（number）创建了以零初始化的数字的固定尺寸数组。但是如何在此行中房间内存室=房间（新地址[]（0），0，0）; room struct struct at占空数阵列，以后如何地址要放在那里吗？
pragma solidity ^0.4.18;
contract StructArrayInit {
event OnCreateRoom(address indexed _from, uint256 _value);
struct Room {
address[] players;
uint256 whosTurnId;
uint256 roomState;
}
Room[] public rooms;
function createRoom() public {
Room memory room = Room(new address[](0), 0, 0);
rooms.push(room);
rooms[rooms.length-1].players.push(msg.sender);
OnCreateRoom(msg.sender, 0);
}
function getRoomPlayers(uint i) public view returns (address[]){
return rooms[i].players;
}
}
As far I know, new address[](number) creates an fixed sized array of that number initialized with zero. But how in this line Room memory room = Room(new address[](0), 0, 0); Room struct is taking an empty array and later how an address is going to be put there?
pragma solidity ^0.4.18;
contract StructArrayInit {
event OnCreateRoom(address indexed _from, uint256 _value);
struct Room {
address[] players;
uint256 whosTurnId;
uint256 roomState;
}
Room[] public rooms;
function createRoom() public {
Room memory room = Room(new address[](0), 0, 0);
rooms.push(room);
rooms[rooms.length-1].players.push(msg.sender);
OnCreateRoom(msg.sender, 0);
}
function getRoomPlayers(uint i) public view returns (address[]){
return rooms[i].players;
}
}
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在此语句中：
在第一行中，他宣布了一个带有以下值的房间结构变量：0,0和0。
这意味着
播放器，whosturnId，roomstatestruct变量的值为零。在第二行的情况下，他在
Rooms数组，ROOMstruct变量之前推动。使用此语句：
他取了数组的最后一个元素（他输入的内容），然后推入
playersarray room struct structmsg.sender价值。如果要在
players数组中插入更多地址，则可以使用以下语句：In this statement:
In the first line, he declared a Room struct variable with the following value: 0,0 and 0.
This means that
players,whosTurnId,roomStatestruct variable have zero values.With the second line, he pushed inside
roomsarray,Roomstruct variable created previously.With this statement:
he took the last element of array (what he has entered) then push inside
playersarray insideRoomstruct themsg.sendervalue.If you want to insert more address inside
playersarray, you can use this statement: